Summary Of Related Party Transactions in Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
ECRM
Related Party Transaction [Line Items]
Accounts receivable		[1]	$ 72
Oclaro, Inc
Related Party Transaction [Line Items]
Accounts payable	$ 150			[1]

[1] Not a related party during this period.